Feeding head for reciprocating or shaker conveyers



June 6, 1939- E. R. BERGMANN FEEDING HEAD FOR RECIPROCATING OR SHAKER CONVEYERS 2 Sheets-Sheet 1 Filed Nov. 10,- 1937 June 6, 1939. E. R. BERGMANN FEEDING HEAD FOR RECIPROCATING OR SHAKER CONVEYERS 2 Sheet s-Sheet 2 Filed Nov. 10, 1937 Mann-"n.

manh/ 5. M Orv lei.

i 40 trough sections;

Patented June 6, 1939 u I V r UNITED STATES PATENT OFFI'CEV FEED ING HEAD FOR REOIPBOCATING OR SHAKER CONVEYERS Ernst R. Bergmann, Chicago, Ill., assignor to Goodman Manufacturing Company, Chicago, 111., a corporation of Illinois Application November 10, 1937, Serial No. 173,746

15 Claims. (Cl. 198220) This invention relates to improvements in feedward end by means of a swivel (not shown) or ing heads for reciprocating or shaker conveyers any other suitable connecting means which will of the type used for gathering and transporting permit it to be spaced above the ground andbe loose material such as coal, rock, or the like. moved from side to side to readily pick up ma-- More specifically, my invention relates to imterial, along the entire coal face and be adjustedifi 5 provements in feeding heads in which the exup and down to conform to an uneven bottom. tension and retraction of a telescopic trough sec- An extensibletrough section or pickup member tion is controlled through clamping means en- II having a flared gathering shovel I2 is adapted gageable with said trough section at will during to be nested within said reciprocating trough certain periods of the forward and return stroke section for telescopic extension or retraction with 10 of the main conveyer, and has as its objects to respect thereto. provide a positive means of an improved and The extensible trough section or pickup memsimplified construction particularly adapted for ber I I is provided with a pair of laterally extenduse along grades for holding the extensible ing bearing plates I3, I3 secured to and extendtrough section from backward movement when ing outwardly from its upper flanges. Said bearthe clamping means are disengaged therefrom. ingplates are adapted to be selectively engaged Other objects of my invention will appear from by friction gripping devices generally indicated time to time as the following specification proby reference character I5, which are manually ceeds. controlledand are adapted to extend or retract My invention may be more clearly understood said extensible trough section with respect to with reference to the accompanying drawings said reciprocating trough section by the action wherein: of the conveyer. V

Figure l is a view in side elevation of a feed- 'The reciprocating trough section II] is proing mechanism attached to the forward end of vided with laterally extending bearing plates I6,

a reciprocating conveyer showing the apparatus I6 which extend outwardly from the upper 5 positioned for loading along an upwardly inclined flanges thereof and which form a track for grade; flanged rollers I1, I I mounted on brackets I9, I9

Figure 2 is an enlarged fragmentary view in secured to and projecting rearwardly from the side elevation, of the device shown in Figure l extensible trough section II. Flanged rollers 20,

with the parts in a different position than in 20 are likewise mounted on said bracket beneath 30 Figure l and with certain parts broken away and the rollers I1, H for engagement with the under in section in order to more clearly illustrate cerside of said bearing plates (see Figures 1, 4, and tain details of my invention; 5). y

\ Figure 3 is a fragmentary plan View of the Asupporting bracket 2| is secured to the under 5 device shown in Figure 1 drawn to a somewhat side of the forward end of the reciprocating larger scale than Figure l with parts broken away trough section l0 and has side walls 22, 22 exand in section; tending upwardly along the outer sides thereof Figure 4 is an enlarged detail view showing and projecting forwardly of the forward end certain details of the slidable connection between thereof. A pair of opposed flanged rollers 23, 23

' is mounted in each side wall 22, the upper rollers g0 Figure 5 is an enlarged sectional View taken being adapted to ride on thebearing plates I3, I3

substantially along. line 5 5 of Figure 3; of the extensible trough section II and the lower Figure 6 is an enlarged sectional view taken rollers being adapted to engage the under side substantially along line 66 of Figure 3; and of said bearing plates to prevent vertical and Figure 7 is an enlarged sectional view taken lateral displacement of said trough sections with 45 substantially along line 'I'I of Figure 3. respect to each other.

Referring now in particular to the drawings, The friction gripping devices I5, I5 are disthe main elements of the embodiment of myinposed in advance of the bracket 2| and are pivvention illustrated therein include a reciprocatotally connected to the side walls'22, 22 adjaing trough section II) connected to and reciprocent the upper sides thereof by means of spring .50 cably driven from the forward end of a reciprolinks 26,. 26. Said spring links are adapted to eating conveyer trough or pan line (not shown). yield when pressure is exerted thereon in a rear- Said reciprocating trough section may be conward direction by said clamping devices to pernected to the forward end of the conveyer pan mit said clamping devices to open and to re- .55 line and supported above the ground at its rearlease said extensible trough section upon presfrom a the bearing plates sure on the forward end of the shovel. Said gripping devices are of a similar construction so one only will herein be described in detail.

Each gripping device |5 includes a carrier member 29 of a C-shaped formation and having the open portion thereof extending inwardly towards the center of the extensible trough l above and below the bearing plate l3. Said carrier member has a pair of friction blocks 3|] and 3| mounted therein on opposite sides of the open portion thereof on bolts 32 and 33 respectively,

the bolt 33 also forming a means for connecting said carrier member to the forward end of the spring link 26. An ear 34 depends from said carrier member and has a link .35 pivotally connected thereto which extends rearwardly therefrom and has a downwardly curved rearward end which is pivotally connected to the end of a crank arm 36. Said crank arm is in turn secured to a transversely extending shaft 31 mounted in advance of the trough section 10 in opposite side wa1ls22, 22 of the supporting bracket 2|. An operating handle 39 is secured to each outer end of said shaft for pivoting said shaft and operating the crank arms 36, 3'6 and thus pivoting the carrier member 29 about its axis of connection to the spring link 26 and bringing the friction grip blocks 30,39 and 3|, 3| into and out of engagement with the bearing 'plates l3, l3.

When it is desired to advance the extensible trough section It with respect to the reciprocating trough section 10, the handle 39 is moved to the position shown in Figure 2, during the forward stroke of the conveyer, to engage the grip blocks and 3| with the bearing plates l3, I3. Said handle is moved upwardly in a counterclockwise direction to the position shown in Figure-1 during the return stroke of the conveyer to permit said friction grip blocks to be disengaged from said bearing plates.

When it is desired to retract said extensible trough section within said reciprocating trough section, the friction blocks 30 and 3| are engaged with the bearing plates l3, l3 upon the return stroke of the conveyer anddisengagedtherefrom upon the forward stroke of the conveyer in the aforementioned manner.

With reference now in particular to the means for positively holding the extensible trough II from backward slipping movement with respect to'the reciprocating trough l0 and several of the novel features of my invention, a pair of holding devices 40, 46 is provided which are operable when the gripping devices l5,- |5 are disengaged l3, l3. One of said devices is provided on each side of the shovel l2 and each of said devices is of a similar construction so one only will herein be described in detail.

The holding device 46 includes a bifurcated member 42 which is pivotally connected between the furcations thereof to a lug 43 depending from the outer side of the shovel l2, adjacent the rearward end thereof. A rod 44 slidably mounted in said member extends rearwardly therefrom. Said rod -is provided with a block or bit holding member 45 on the rearward end thereof which is adapted to detachably hold a depending bit 46, which'is herein shown as being an ordinary cutter bit :of the typeyused in mining machine cutter chains. The point of said bit extends downwardly towards the ground, and is directed towards the rear of the conveyer so that it may engage the ground and hold the extensible .trough section from backward slipping movement "with respect to the reciprocating trough section.

wall 22 (see Figure 6).

. ing outwardly from the side wall 22.

sion spring 65 encircles the rod 63 and is inter A compression spring 41 encircles said rod and is interposed between the member 42 and the bit holding member 45 to permit yieldable movement of said rod in a direction towards the forward end of the shovel. A nut 49 is threaded on the end of said rod and is adapted to abut the member 42 within the furcations thereof to retain said rod on said member.

A flexible member or cable 50 is provided to actuate the holding device 46. Said flexible cable is secured to the bit holding member 45 at one of its ends, in a suitable manner, and extends upwardly therefrom and around and over a sheave 52 mounted on a bracket 53 depending from the under side of the bearing plate l3. From said sheave said cable passes rearwardly over a sheave 54 mounted on the inner side of the side wall 22 adjacent the forward end thereporting bracket 56.

The supporting bracket 56 includes a projecting portionii'l which extends outwardly from said sheave through a slotted opening 59 in the side The outer end of said projecting portion is provided with a slot which opens towards the lower end thereof and is adapted to receive a roller 66 mounted on. a shaft 6| which shaft also forms a support for the sheave 55. formed integral with the projecting portion 51 extends upwardly therefrom and is slidably mounted in a bracket 64 secured to and project- A compresposed between the under side of the bracket 64 and the upper side of the projecting portion 51 to permit yieldable movement of the bracket 56 in the slotted opening 59. From the sheave 55 the flexible cable 50 passes:

shaped lever 19 on the shaft 31 so that when said 'shaft is pivotally moved in a counterclockwise 1 direction by movement of the operating handle 39 from an engaged to a disengaged position the yieldable bracket 56 will be positively moved in an upward direction, which will provide slack in 5 the flexible cable 59 and permit the bit 46 to engage the ground and hold the extensible trough section from backward'movement. When said operating handle is moved in an opposite direction from a disengaged to an engaged position the roller 60 will follow the cam shaped lever 16 which will permit the sheave 55 to be depressed by the spring to raise the holding device 40 to an inoperative position,

It should be noted that when the extensible trough section is being retracted within the reciprocating trough section that the holding devices 46, 40 will be raised from the ground during the return stroke of the conveyer and will engage the ground during the forward stroke of the conveyer.

It will be seen from the foregoing that a new and improved means of a simplified construction has been provided for rendering a feeding mechanism, actuated by the action of the conveyer,

A rod 93 herein shown as being practical for operation] along upwardly inclined -grades, which "does this by holding the extensible conveyer trough from backward-slipping move- -ment during thereturn stroke of theconveyer,

j 'plified and efficient manner.

While I have hereinshown and described one form in which my invention may be embodied, it will be understood that the construction thereof andthe arrangement of the various parts may be altered. without departing from the spirit and scope thereof. Furthermore, I do not wish to be construed as limiting myself to the specific embodiment illustrated, excepting as it may be limited in the appended claims. I claim as my inventioni 1. In a feeding mechanism for shaker conveyers, a reciprocating trough section, an extensible trough section, feeding means for extending or retracting said extensible trough section with respect to said reciprocating trough section, and other means controlled by said feeding means for positively engaging the ground and holding said extensible trough section from backward slipping movement with respect to said reciprocating trough section. I I

2; In a" feeding mechanism for shaker conveyers', a reciprocating trough section, an extensible trough section,.feeding means for extending or retracting said extensible trough section with respect to said reciprocating trough section, and a, holding device mounted on said extensible trough section for engagement with the ground when said feeding means is in an inoperative position for positively holding said extensible trough section from backward slipping movement with respect to said reciprocating trough section.

3. In a feeding mechanism for shaker convey- .ers, a reciprocating trough section, an extensible .trough section, feeding means for extending or retracting said extensible trough section with respect to said reciprocating trough section, and other means controlled by said feeding means for holding said extensible trough section from backward slipping movement with respect to said reciprocating'trough section comprising a holding device mounted on said extensible trough section for engagement with the ground when said feeding means is in an inoperative position.

4. In a feeding mechanism for shaker conveyers, a reciprocating trough section, an extensible trough section having a shovel on the forward end thereof adapted to reciprocably move along the ground, feeding means for extending or retracting said extensible trough section with respect to said reciprocating trough section, and

other means controlled by said feeding means for holding said extensible trough section from backward slipping movement with respect to said reciprocating trough section comprising a'pair of holding devices pivotally mounted on opposite sides of said extensible trough section for engagement with the ground when said feeding means is in an inoperative position.

5. In a feeding mechanism for shaker conveyers, a reciprocating trough section, an extensible trough section, a' pair of friction gripping devices for extending or retracting said extensible trough section with respect to said reciprocating trough section, and means mounted on said extensible trough section for engagement with the ground when said gripping devices are disengaged from said extensible trough section for holding said extensible trough section from backward slipping movement with respect to saidre- ;cipro'cating trough section.

. 6. In a feeding mechanism for shaker convey- Ters,;a reciprocating trough section, an extensible trough-sectioma pair of gripping devices for extending or retracting said extensible trough section with respect to said reciprocating trough section, and means controlled by the means for j actuating said gripping devices and adapted to engage the ground when said gripping devices are disengaged from said extensible trough section for holding said extensible trough section from backward slipping movement with respect to said reciprocating trough section.

7. In a feeding mechanism for shaker conveyers, a reciprocating trough section, an extensible trough section having a shovel on the forward end thereof, a pair of friction gripping devices'for extending or retracting said extensible trough section with respect to said reciprocating trough section, a holding device pivotally connected to said extensible trough section for engagement with the ground when said gripping devices are disengaged from said extensible trough section, and an operative connection between said holding device and gripping devices for permitting said holding device to engage the ground and hold said extensible trough section from backward slipping movement when said gripping devices are disengaged therefrom, and for positively raising said,

holding device above the ground when said gripping devices are engaged with said extensible trough section.

3. In a feeding mechanism for shaker conveyers, a reciprocating trough section, an extensible trough section having a shovel on the forward end thereof, a pair of friction gripping devices for extending or retracting said extensible trough section with respect to said reciprocating trough section, a pair of holding devices mounted on said extensible trough section for engagement with the ground when said gripping devices are disengaged from said extensible trough section, one of said holding devices being mounted on each side of said extensible trough section adjacent said shovel, and connections between said holding devices and the means for operating said gripping devices for permitting said holding devices to engage the ground on the stroke of the I conveyer when said gripping devices are disengaged from said extensible trough section and for positively disengaging said holding devices from the ground upon the stroke of the conveyer when said gripping devices are engaged with said extensible trough section.

9. In a feeding mechanism for shaker conveyers, a reciprocating trough section, an extensible trough section, a pair of manually controlled the ground when-said gripping devices are disengaged from said extensible trough section and for positively raising said holding device above the ground when said gripping devices have gripping engagement' with said extensible trough section.

10. In a feeding mechanism for shaker convey- -ers, ia reciprocating trough section, an extensible trough section, a pair of gripping devices for extending or retracting said extensible trough sec- .tion with respe'ctto said reciprocating trough section, manually operable means for engaging said gripping devices with said extensible trough section, a holding device pivotally connected to said extensible trough section and adapted to engage the ground, and a flexible member connected between said holding device and the means for engaging said gripping devices with said extensible trough section for permitting said holding de- 1 vice-to engage the ground when said gripping devices are disengaged from said extensible trough section and for positively raising said holding device abovethe ground when said gripping devices have gripping engagement with said extensible trough section.

11. In a feeding mechanism for shaker conveyers, a reciprocating trough section, an extensible trough section, feeding means for extending or retracting said extensible trough section with respect to said reciprocating trough section including a pair of friction gripping devices disposed in advance of said reciprocating trough section,

' means for operating said gripping devices including a rocking shaft and an operative connection 'trough section, feeding means for extending or retracting said extensible trough section with respect to said reciprocating trough section including a pair of friction gripping devices disposed in advance of said reciprocating trough section,

means for operating said gripping devices including arocking shaft and an operative connection from said shaft to said gripping devices, and means actuated by said shaft for holding said extensible trough section from backward slipping movement with respect to said reciprocating trough section including a holding device pivotally connected to said extensible trough section, a sheave, a flexible member having connection with said holding device adjacent one of its ends and with said extensible trough section adjacent its opposite end and having engagement with said sheave intermediate its ends, and a connection from said shaft for bodily moving said sheave upon turning movement of said shaft and permitting said holding device to engage the ground or for positively disengaging said holding device therefrom.

13. In a feeding mechanism for shaker conveyers, a reciprocating trough section, an extensible trough section, feeding means for extending or retracting said extensible trough section with respect to said reciprocating trough section including a pair of friction gripping devices disposed in advance of said reciprocating trough section, means for operating said gripping devices including a rocking shaft and a connection from said said shaft to said gripping devices, and means actuated by said shaft for holding said extensible trough section from backward slipping movement with respect to said reciprocating trough section including a holding device pivotally connected to said extensible trough section, a sheave, means interposed between said shaft and sheave for bodily moving said sheave with respect to said shaft in one direction, yieldable means for moving said sheave in an opposite direction, and a flexible cable having engagement with said sheave intermediate its ends, having connection With said holding device adjacent one of its ends and with said extensible trough section adjacent its opposite end whereby movement of said sheave in one direction will permit said holding device to engage the ground and movement of said sheave in an opposite direction will positively disengage said holding device from the ground.

14. In a feeding mechanism for shaker conveyers, a reciprocating trough section, an extensible trough section, feeding means for 8X--,-

tending or retracting said extensible trough section with respect to said reciprocating trough section including a pair of friction gripping devices disposed in advance of said reciprocating trough section, means for operating said grippingdevices including a rocking shaft and an operative connection from said shaft to said gripping devices, and means actuated by said shaft for holding said extensible trough section from backward slipping movement with respect to said reciprocating trough section including a holding device pivotally connected to said extensible trough section and adapted to engage the ground, a flexible cable having connection with said holding device adjacent one of its ends and with said extensible:

tensible trough section, feeding means for extending or retracting said extensible trough section with respect to said reciprocating trough section including a pair of friction gripping devices disposed in advance of said reciprocating trough section, means for operating said gripping devices including a rocking shaft and an operative connection from said shaft to said gripping devices, and means actuated by said shaft for holding said extensible trough section from backward slipping movement with respect to said reciprocating trough section including a holding device pivotally connected to said extensible trough section and adapted to engage the ground, a flexible cable having connection with said holding device adjacent one of its ends and with said extensible trough section adjacent its opposite end, a sheave adapted to engage said flexible member intermediate its ends, an operative connection between said sheave and shaft for bodily moving said sheave in a direction to permit said holding device to engage the ground upon movement of said shaft in a direction to disengage said gripping devices from said extensible trough section, and a yieldable member for moving said sheave in an opposite direction to positively disengage said holding device from the ground upon movement of said gripping devices to an engaged position.

ERNST R. BERGMANN. 

